Shoring stanchions for marine use



Sept. 27, 1966 TOSHIO IGAUE ETAL 3,

SHORING STANCHIONS FOR MARINE USE Filed Oct. 26, 1964 2 Sheets-Sheet l T W j wmpmn lnvenlors B f f Attorney Sept. 27, 1966 TOSHIO IGAUE ETAL 3,274,967

SHORING STANCHIONS FOR MARINE USE Filed Oct. 26, 1964 2 Sheets-Sheet 2 735/710 .2271 U6 fyu SHINDDERA,

Inventor:

Attorney Unite "I rates Patent G i Shimodera, Tokyo, Japan, assignors to Mitsni (lsk Lines, Ltd, Osaka, Japan, and Kobe Steel Works, Ltd, Kobe,

Japan Filed Oct. 26, 1964-, Ser. No. 406,619 Claims priority, application Japan, Oct. 26, 1963, sis/same, 38/813,749 1 Claim. (61. 114-75) The present invention relates to a shoring stanchion adapted to support horizontal planks for holding cargoes in position in ship holds.

When a ship is loaded with freight, the cargo tends to be displaced as the ship pitches and rolls. To avoid this displacement of cargo, it is conventional to install a plurality of wooden poles at strategical points in the ship hold and nail horizontal planks onto the poles so as to divide the hold into several compartments in which the cargo may be securely held in position.

The wooden poles that have been conventionally employed are not structurally intricate ones, but the required lengths of wood are directly used as poles and, as such, are removed and discarded at the end of each voyage. In other words, that much of wood is wasted.

A primary object of this invention is to provide a shoring stanchion which is capable of holding horizontal planks effectively in position.

Another object of the invention is to provide a shoring stanchion which can be easily installed under tension between the ceiling and floor of the ship hold.

Another object of the invention is to provide a shoring stanchion the tension of which may be increased or decreased in accordance with necessity between the ceiling and floor of the ship hold.

Still another object of the invention is to provide a shoring stanchion, on which horizontal planks may be easily mounted.

These and other objects of the invention may be accomplished, in accordance with the present invention, by providing a shoring stanchion in such a manner that it is mainly consisted of an upper tubular pole and a lower tubular pole, the lower end of said upper tubular pole being fitted securely into the upper end of said lower tubular pole through a coupling tube integral with or attached to the upper end of the lower tubular pole so that a knock pin may be inserted through the slots provided in said coupling tube and through the openings in the upper tubular pole, both ends of said knock pin being supported by a nut which is threaded onto the periphery of said coupling tube.

Furthermore, in accordance with this invention, the upper tubular pole is provided with brackets, each adapted to receive and support a horizontal plank, said brackets respectively consisting of bracing plates that support the tubular pole on both sides, side plates that secure the bracing plates in position, cylinders attached securely to said side plates respectively, a supporting frame adapted to fit into said cylinders, and a set of bolt and nut for fastening said two side plates.

This invention will hereinafter be described in further detail, by referring to the accompanying drawings, in which:

FIG. 1 is a front view of the shoring stanchion of this invention;

FIG. 2 is a side elevation of FIG. 1;

FIG. 3 is a cross-sectional view, on exaggerated scale, of same stanchion, taken on line III-III of FIG. 2,

FIG. 4 is a cross-sectional view taken on line IV-IV of FIG. 3;

FIG. 5 is a side elevational view of the bracket of this invention;

3,274,967 Patented Sept. 27, I966 "ice FIG. 6 is a front view of the bracket; and

FIG. 7 is a cross-sectional view taken on line VIIVII of FIG. 6.

Referring to the drawings, the stanchion of the present invention consists, primarily, of a comparatively short lower tubular metal pole A having a lower supporting plate 1 attached piyotally to same by a pin 2 at its lower end and a comparatively longer upper tubular metal pole B having an upper supporting plate 1' attached pivotally to same through a [pin 2 at is upper end, the outer diam eter of said upper tubular pole being approximately equal to the inner diameter of said lower tubular pole A so that the lower portion of said upper tubular metal pole B may be inserted into the bore of the upper portion of said lower tubular pole A. In this manner, the distance between the upper supporting plate 1' and lower supporting plate 1, that is to say, the entire length of the stanchion, may be variable. Over the upper end of said lower tubular metal pole A is fitted the lower end 9 of a coupling tube 8 having a threaded exterior surface 7, said tube 8 being rivetted or otherwise secured fixedly to said tubular pole A at 10 so that the upper tubular metal pole B may be fitted into said coupling tube 8 (see FIG. 3). Over a suitable distance in the lower portion. of said upper tubular pole B is provided two rows of diametrically opposed openings 11, 11, while U-shaped locking slots 12, 12 which, respectively, open upwardly are provided in the wall of said coupling tube 8 in diagonally opposite positions so that when a knock pin 13 is passed through said openings 11, 11 and slots 12, 12, the coupling tube 8 is prevented from rotating with respect to the upper tubular pole B.

A nut 15 having an annular recess 14 formed a short distance from its edge and opening upwardly is threaded onto said coupling tube 8 so that the ends of said knock pin 13 may be supported by the annular recess 14. In this manner, the upper tubular pole B is prevented from sagging with respect to the coupling tube 8 The upper tubular metal pole B is provided with brackets 5 of some suitable structure which is pyrically shown in FIGS. 5, 6, and 7. The bracket 5 comprises a pair of side plates 22, 22 have arcuate bracing plates 21, 21 secured fixedly to their inner sides, respectively, and vertical cylinders 23, 23 secured fixedly to the corresponding ends of said side plates, respectively. The two legs 25, 25 of an inverted U-shaped supporting frame 24 are inserted from above into the respectively cylinders 23, 23 and the two side plates 22, 22 are connected with each other by a nut 27 which is threaded onto the projecting end of a bolt 26 passing through said side plates.

The bracket described above is attached to the stanchion in such a manner that the two bracing plates 21, 21 clamp the pole B and hold it securely in position as the nut 27 is tightened. In a clearance S being thus created between the pole B and supporting frame 24, a horizon tal plank 17 may be inserted along the pole B. In this connection, it is to be noticed that as the bolt 26 is tightened, the distance between the side plates 22, 22 are diminished but since the other ends of the side plates 22, 22 are restricted by the inverted U-shaped supporting frame 24-, the arcuate bracing plates 21, 21 clamp the pole B tightly.

Having the structure described above, the shoring stanchions of this invention are erected at strategical points in the ship 'hold. For this purpose, the lower supporting plate 1 is nutted against the fioor of the ship hold and the upper supporting plate 1' against the ceiling so that the stanchion may be securely erected in position between the ceiling and floor of the ship hold. Then, the planks 17 are inserted in the space 5 in position on the stanchion. In erecting a stanchion in the ship hold having a limited head room, the length of the stanchion or the distance between the upper and lower supporting plates must be adjusted to the height of the ceiling. The entire length of the stanchion depends on the depth of overlap between the upper and lower tubular poles B and A. To adjust the depth of overlap between the two poles in a substantial measure, the proper opening 11 for the knock pin 13 is selected, and the nut 15 is turned for further fine adjustment. In this manner, the depth of overlap between the poles A and B may be altered over a substantial lift stroke.

To transfer the knock pin 13 from one set of openings 11 to another, the nut 15 is turned some distance downward and the ends of the pin 13 are disengaged from the annular recess 14. Then the pin may be removed from the openings 11, 11 and inserted into another suitable set of openings.

The upper tubular pole B tends to settle under its own weight and the knock pin 13 to fit into the slot 12 of the coup-ling tube 8. Therefore, if the nut 15 is turned along the threaded wall 7 of the coupling tube 8 until the stanchion is set at a predetermined height where the knock pin 13 should be locked, both ends of the pin 13 will fit into the annular recess 14, and, accordingly, the upper tubular pole B prevented from settling any more.

Thus, within the distance between the uppermost and the downmost of the vertical rows of openings 11 provided in the upper tubular pole B, the depth of engagement between the upper and lower tubular poles B and B is variable. Moreover, in order to adjust the depth of overlap between the two poles within the spacing of any two adjacent openings 11 (the pitch of openings), the nut 15 may be tightened or loosened as required. Stated differently, the depth of overlap between the upper and lower tubular poles B and A may be continuously and steplessly adjusted.

By utilizing both rough adjustment (overlap between the poles A and B) and fine adjustment (by nut 15) in a suitable combination, the stanchion of this invention may be easily and securely fixed between the ceiling and floor of the ship hold.

After loading, it has heretofore been unavoidable that the stanchion is loosened with respect to the ceiling and floor of the ship hold upon rolling or pitching of the hull. In the case of the stanchion of this invention, however, the nut 15 may be turned to lift the knock pin 13 and the upper tubular pole B, whereby the stanchion may be retightened with respect to the ceiling and floor. It is to be noticed that even when the nut 15 is rotated, the knocked pin 13 merely slides in the slot 12 of the coupling tube 8 so that the upper tubular pole B may be raised or lowered as desired without turning. Thus, the friction between the upper supporting plate 1' and the ceiling is successfully prevented. The nut 15 may be turned with a suitable tool by engaging the latter with recess 18 on the nut.

In removing the stanchion from the ship hold, the upper tubular pole B settles and the upper supporting plate 1 is detached from the ceiling when the nut 15 is slightly loosened.

It is preferable to attach pads 19, 20 to the outer asides of the upper and lower supporting plates 1, 1 so as to provide a closer contact between the plates and the K ceiling and floor respectively.

When the above-mentioned bracket is used, as its side plates 22, 22 are loosened, the bracket may be retightened with the nut 27. If the nut 27 is loosened, the side plates 22, 22 may freely slide vertically along the pole B so that the altitude of the plank 17 may be altered as desired. Since the plank 1.7 is supported by the upper surfaces of side plates 22, 22 and, also by the supporting frame 24 and pole B from front and behind, respectively, it is prevented from tilting upon loading.

It will be apparent from the above description that the present invention provides a novel shoring stanchion having a very simple structure which may be easily installed in the ship hold or displaced therefrom as desired. Moreover, the stanchion of this invention may be put to use without any auxiliary devices and even when the head room is altered, the stanchion may be securely installed with the aid of its built-in adjusting mechanism.

Furthermore, even if the stanchion is loosened during a voyage, it may be retightened simply by turning the nut. Thus, the present stanchion is practically very useful for slip-proof stowage.

What we claim is:

A shoring stanchion for marine use comprising in combination: a lower tubular pole having a bore, an upper tubular pole having a lower portion which is adapted to fit into the bore of the upper portion of said lower tubular pole, a coupling tube having diametrically opposed U- shaped slots and having an exterior wall surface which is threaded, said coupling tube being adapted to fit over the upper portion of said lower tubular pole, said upper tubular pole having diametrically opposed vertically spaced openings in the lower portion of its wall, a knock pin adapted to be inserted through said slots and said openings for positioning the upper pole with respect to the lower pole a nut being engageable with the outer thread of said coupling tube for supporting said pin from underneath, and supporting brackets mounted on said stanchion for supporting planks in a horizontal position on the stanchion such that the planks serve to secure marine cargo in a desired position, said supporting brackets including a pair of side plates, each of said side plates having an opening through one end thereof, bracing plates arranged on the inner sides of said side plates for embracing a pole of the stanchion, an inverted U-shaped frame having two legs, a cylinder being fixedly secured to the other end of each of said side plates for receiving a respective one of said legs of said U-shaped frame so that the side plates are positioned at right angles with respect to the U-shaped frame, a headed bolt adapted to pass through the openings provided in the one end of said side plates, and a nut mounted on said bolt whereby said nut and bolt coact with said side plates for clamping the brackets to the pole.

References Cited by the Examiner UNITED STATES PATENTS 2,686,649 8/1954 De Vigier 248-354 2,749,068 6/ 1956 Wayman 24872 2,919,662 1/1960 Tobin -369 2,976,823 3/1961 Dodge 105-369 3,139,277 6/1964 Mears 248354 3,140,848 7/1964 Sherburne 24872 FOREIGN PATENTS 714,075 8/ 1954 Great Britain.

MILTON BUCHLER, Primary Examiner.

T. M. BLIX, Assistant Examiner. 

